<%@page import="java.util.Map"%>
<%@page import="java.util.HashMap"%>
<%@page import="java.util.ArrayList"%>
<%@page import="entity.Student"%>
<%@page import="java.util.List"%>
<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
	<%
		pageContext.setAttribute("age", 23);
		pageContext.setAttribute("gender", "男");
	%>
	<c:set var="age" value="20"></c:set>
	<c:if test="${age==20}">
		今年二十岁了
	</c:if>
	<c:if test="${gender=='男'}">
		男
	</c:if>
	<c:if test="${gender=='女'}">
		女
	</c:if>
	<hr/>
	
	<c:set var="score" value="90"></c:set>
	<c:choose>
		<c:when test="${score>=90&&score<=100}">
			优秀
		</c:when>
		<c:when test="${score>=80&&score<=90}">
			良好
		</c:when>
		<c:when test="${score>=70&&score<=80}">
			一般
		</c:when>
		<c:when test="${score>=60&&score<=70}">
			及格
		</c:when>
		<c:otherwise>
			不及格
		</c:otherwise>
	</c:choose>
	<br/>
	<c:forEach begin="0" end="5" var="i" step="2">
		${i}
	</c:forEach>
	<hr/>
	<%
		List<Student> list = new ArrayList<Student>();
		Student student1 = new Student(1, "赵六1", 23, "男");
		Student student2 = new Student(1, "赵六2", 23, "男");
		Student student3 = new Student(1, "赵六3", 23, "男");
		list.add(student1);
		list.add(student2);
		list.add(student3);
		application.setAttribute("list", list);
	%>
	<c:forEach items="${list}" var="student">
		${student.student_name}-${student.student_age}
	</c:forEach>
	<!-- 
		Map<String,String>   Map<String,Student>
	 -->
	 <%
	 	Map<String, String> map = new HashMap<String, String>();
	 	map.put("cn", "中国");
	 	map.put("us", "美国");
	 	request.setAttribute("map", map);
	 %>
	 <hr/>
	 <c:forEach items="${map}" var="entry">
	 	${entry.key}--${entry.value}
	 </c:forEach>
	 <hr/>
	<%
		Map<String, Student> map2 = new HashMap<String, Student>();
		Student stu1 = new Student(1, "赵六11", 23, "男");
		Student stu2 = new Student(1, "赵六22", 23, "男");
		Student stu3 = new Student(1, "赵六33", 23, "男");
		map2.put("stu1", stu1);
		map2.put("stu2", stu2);
		map2.put("stu3", stu3);
		application.setAttribute("map2", map2);
	%>
	<c:forEach items="${map2}" var="entry">
		${entry.key}--${entry.value}--${entry.value.student_name} <br/>
	</c:forEach>
</body>
</html>